Characterization of hepatitis B virus genotypes among Yucpa Indians in Venezuela

T. Nakano, L. Lu, X. Hu, M. Mizokami, E. Orito, C. N. Shapiro, S. C. Hadler, B. H. Robertson

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61 Citations (Scopus)


The complete genome sequences of hepatitis B virus (HBV) from 12 HBV-infected Yucpa Indians of Venezuela, a group with highly endemic HBV, were amplified and sequenced. The 12 isolates were closely related to each other, with 98·6-100% nucleotide identity. A phylogenetic tree based on the complete genome indicated clearly that they were genotype F. Three individuals had evidence of infection with two different HBV deletion mutants. In two individuals, a three amino acid deletion was identified just prior to the 'a' determinant loop of the S region. A third individual was infected with virus that contained a complete core reading frame and a population that contained a deletion in the middle of the core region. These results indicate that genotype F HBV is present in the Venezuelan Yucpa Amerindians and the complete genome sequence allowed the identification of two unique deletion mutants in a limited set of samples.

Original languageEnglish
Pages (from-to)359-365
Number of pages7
JournalJournal of General Virology
Issue number2
Publication statusPublished - 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Virology


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